Alleged drug driver crashes with unrestrained children in car outside police station

A man was allegedly high on drugs when he crashed a car outside a Sydney police station with two children in the back seat.

Police say the 29-year-old driver narrowly missed hitting a male officer and a parked car before mounting the curb and stopping on the footpath outside the Mt Druitt police station at about 10.30pm on Saturday.

While police were arresting the man, they noticed two girls, aged five and seven, "unrestrained in the car in a distressed state".

"The girls were checked and found to have escaped physical injury; police have reported the matter to Family and Community Services," NSW Police wrote on Facebook. 

Moments before the crash, the man had allegedly failed to stop after a collision at the intersection of Duke Street and Luxford Road.

He had also earlier been arrested at midday Saturday for driving while on drugs on the New England Highway at Liddell.

The father had been taken to Muswellbrook Police Station and issued with a suspension notice prohibiting him from driving for 24 hours.

After the second incident, he was charged with driving recklessly and negligently and failing to comply with prohibition.

He was refused bail to appear at Parramatta Bail Court.